"In you come" said Serena, the HR manager, "you'll love the team".
Jim wasn't so sure, but was very impressed by Uniqco's leaving card scheme. Every employee gets issued with a Leaving Card* on the day they join, which is kept by HR. Then, when an employee leaves they have to sign all of the leaving
cards for people they're currently working with.
That way, hey presto, when someone leaves Uniqco they get a leaving card signed not just by the new raft of current employees (who seem very nice), but by all the lovely people who were there when they joined, and they really liked.

*if the concept's unfamiliar, in a lot of work places, people are given a card when they leave signed by co-workers.

This registry would also be useful in allowing HR to perform a statistical analysis of the most common leaving card messages, a list of the most popular being published as verboten, making everyone else more inventive with their comments.